Equalizer for six-wheel trucks.



E. PossoN.

,1910. 979,033. Patented De@f 20, 1910.

:caused ,each et them to bear upon the top .of-the'journal box a considerable distance -upon each .side ot' the center of the same.

j entran sTAirEsrATnnr cientos.

- l:E-nWfA-Rfn'friio-sson, ofFoHIoAGog ILLINOIS. l

i nts-.neuzen non six-weisst; 'mocks To all whom it may concern.'

Beit known that I, EnWAnn'PossoN, a citi/.en ot the United States, residing at. Chica Gouin the'rounty of Cook andv State of Illinois,A have invented certain new and use- 'ul improvements iuEqualizers for. Sixllfheel Trueks,'of .which the following is a. specification.

invention relates to the equalizer bars Aror levers-'that are used 'in six vWheel trucks B V means of these equal- 'izers the weight is equally distriluited to the foi-railway ears.

wheels.

the' connection of the 'equalizer-s to the mid dle journal boxes on each side of the truck.

-f i-Mirthe present time the inner ends oilr the equalizers on each side of the truck rest upou the middle `journal box of 'that side,v

but `the .said ends are so placed. upon the joui-nal box thatthey have a tendency to cause a rotation ofthe journal box about Lilie' a-xisot'the journal which `they inelose.

The ends of the said'equalizerbear upon ytli'e top of the journal box at 'opposite sides o'the center of said box, `with the ends al'iutting Substantially at the center. Any excess ot pressure otl the `end of one of the baison either side ot' the box causes a tendfcncy ofthesaid. box to rotate, and to befof yisaidequalizers upon vthe middle journal .boxf lfhave endeavored to cause t'hei said pressures to be imparted to said box at snbstantially `the centerl ot its upper surtade. Inbringing about this ett'ect, l .have made the endslot the. equalizerv overlap and have In doing this, it has become advisable to give lthe-.ends a stepped forni, i n such a manner that the combined thicknesses ofthe overlapped portions are equal to the thickness of each of the eqnalizers.

I 'A further object hasbeento provide a rib 50 of'rny improvements will be made apparent in the fo lowing specification and claims,

My invention has particular reference te y Specification of 'Letters atent." Patented Dec. 20, 1910. Appneaf'iqn ined March as, 191e. serial no. 551,756.

ttaken in connection with the accompanying drawings, in Which`- Figure 1 is a side elevation of a six wheel truck, showing the essential elements. which are .related to my invention. F ig. 2 is a vertical section ot' the upper. portion of the journal boxshowing the relation of the ends rof the edualizers thereto-#this section beingV taken on the line 2 2 of Fig. 3. Fig. 3 is a sectional View, taken on the line I3--3 of Fig. *L -this section passingwthrough the axis ot' the 4journal and giving'a sectional view of the overlapping ends of the equali'zei's. Fig. 4 is a plan `view of the same.

By referring to Fig. l of 'the drawings, it will be seen that this-view has more or less of a diagrammatic nature, the essential parts only of a six wheel truck being shown. The car is carried by the frame ,i3 through cer-A tain intermediate parts, which have no rela tion to my invention and are not here shown. The truck frame rests upon the springs S, (3, which, inA turn, are supported .by the equalizers 7, 7a2 The ends of the equalizers T, 7 are, in turn, carried by the journal boxes 11, l1EL and l5. Itfwllbe evident that it is desirable to equally distribute the weight upon the three journal boxes. It will also be evident that .the middle journal box must carry the ends of the two equal izers, while the outer journal boxes 1l and llahave each one 'end only of a'n equalizer to carry. l

lu ordeitI that the pressure upon the middle journal bex may be equal to that unon the end journal boxes, each. of the equaizers 7,

7' is so proportioned that one-third of the 11,11, and are ordinarily so formed' thaty then-pressures are centrally and squarely imparted to said journal boxes. These journal boxes Il, lla are mounted upon the journals i2, 12a and the pressure is thereby In order to transmitted to said journals, and finally to the wheels 13, 13a. My invention does not 'relate to the manner in which the end l() is placed upon thejournal box l1, or to the manner 1n which the end l0El of the other equalizer bar l box 112 fy The innerfV ends 14`and 1 8 'of the't'yvo 'equab izers 7 and 7a nest upon Lthe journal-'110x155 In order tb at'the .two ends vmay rest centrally upon said box, I give them astepped form,

as shown at 19 and 20." These ste ped ends are made to overlap and to exten a considerable distance beyondthe centenofthe'to of the box. It will be seen that with th 's1'.

construction there can be no" tendency to cause a rotation of the box about the 'journal of the equalizers and parallel tothe axis of' the journal onA which the box rests. I also 20V provide notches 21 in the ends of the equal-- i/gers, at. their lower. sides, which are vadapt-4 ed to engage 'the said rib. I 'preferablyprovide a clearance 23 between the surfaces of the notch 21 and therib 22, rin order that .25 thelower surfaces of the ends of the equal-r izers may rest squarely upon the top of thel box without interference vwith the rib 22.

I also provide a. clearanceI 24 l between the end of each lapped portion and -the Vstepped portion of the adjacent equalizer, in order to'permit a desirable freedom in the move ment of the parts; 5 l

A teither sideiof'the lapped end ot the equalizers 14 and 18, and in a parallel direction thereto, I, provide the Vribs 24 and 25,

n which rise upwardly from the body of the journal box and prevent lateral displacement 'of the equalizer ends.

The operation ofthe equalizers as thus 40 moditied'in accordance with my invention is as follows: The ends 14 and 18 transmit onethird of the pressure of each of the springs 6 and 6 to the middle journal box. By my improved form of construction the, pressure lis distributed uniformly across the top 'of the box. This is due to the fact that I have .elongated the said ends. The rib 22 rises ,into the notch or groove 21 in each ofthe equalizer ends and prevents displacement thereof. The rotary movement of the journal box out of the square condition is also prevented by the said rib. A tendency to rotatewould be resisted by the equalizers. The lateral displacement, as before men tioned, is'prevented by the ribs 24 and 25 at the sides. i

I claim: 1. Inarcar truck, .the combination with a journal box of av plurality`of e ualizers ha ving their meetinends adapte 'tobear centrally upon said 2. In a car truck, the combination with a upon the .journal4 displacement of Varabes,

journal .box of a plurality of equalizefs hav-- lng their meeting'ends bearing upon saidi 3. Inv a cartruck, the combination with a j journal box of a plurality of equalizers bear- -lI at their meeting ends upon said box,- said `en'sbeing stepped and lapped in such 1nanner as to 'permit thenfto bearju'pon said box ..w ithout tendency to rotate said box. 1k.. .4. In a"car truck, the combination withl a journal boxof aplurality of equalizers bearf mg at their` meeting ends upon said box, said ends being stepped and lapped to per` mit said equallzers to be disposed in' alinement.

5. In a car truck, the combination with a jurnal box of a plurality-of equahzers bear ing at their ,meeting ends upon sa1dbox,

said ends beingV stepped and lapped to per-4 mit said equalizers to be dispgsed inalinement and to permit their'ends'to bear cent'rally upon said box. 6. In a device of the character described, a journal box having a centrally disposed rib on its upper surface, a 'plurality of equalizers bearing at their meeting ends upon said box, saidequalizers having grooves in said ends overlying said rib.

` 7. In a device of' the vcharacter described, 4a journal box having a centrally disposed rib on its upper surface, a plurality of equalizers bearing at their meetmg ends upon 'said box, and means on Said equalizers forV engaging said ribs;

8. In a device of the. character described, ajournal box, a plurality of equalizers bearing at their meetmgends upon said box, said ends bearing upon said box in a manner to prevent rotation thereof, means for preventing longitudinal displacement of said equalizers on said box, and means for preventing lateral displacement of .said equalizers on 'said box. 7 y

9.. In a devise `of thecharacter described,

displacement thereof, vand a rib between said transverse ribs at right angles Vthereto adapted to prevent longitudinal displacement of said .equalizers In testimony whereof, I have subscribed my name;

' EDWARD POSSO.

' HENRYA. PARKS,

FLoRnN-CEA. FLonnnn;

' Witnesses a journal box, `a plurality of equalizers bear- 

